Effect of Alkyl Chain Branching Point on 3D Crystallinity in High N‐Type Mobility Indolonaphthyridine Polymers

Fallon, Kealan J.; Santala, Annikki; Wijeyasinghe, Nilushi; Manley, Eric F.; Goodeal, Niall; Leventis, Anastasia; Freeman, David M. E.; Al‐Hashimi, Mohammed; Chen, Lin X.; Marks, Tobin J.; Anthopoulos, Thomas D.; Bronstein, Hugo

doi:10.1002/adfm.201704069

Title: Effect of Alkyl Chain Branching Point on 3D Crystallinity in High N‐Type Mobility Indolonaphthyridine Polymers

Abstract

Abstract Herein, this study investigates the impact of branching‐point‐extended alkyl chains on the charge transport properties of three ultrahigh n‐type mobility conjugated polymers. Using grazing incidence wide‐angle X‐ray scattering, analysis of the crystallinity of the series shows that while π–π interactions are increased for all three polymers as expected, the impact of the side‐chain engineering on polymer backbone crystallinity is unique to each polymer and correlates to the observed changes in charge transport. With the three polymers exhibiting n‐type mobilities between 0.63 and 1.04 cm ² V ⁻¹ s ⁻¹ , these results ratify that the indolonaphthyridine building block has an unprecedented intrinsic ability to furnish high‐performance n‐type organic semiconductors.

Authors:

Fallon, Kealan J. ^[1]; Santala, Annikki ^[1]; Wijeyasinghe, Nilushi ^[2]; Manley, Eric F. ^[3]; Goodeal, Niall ^[1]; Leventis, Anastasia ^[1]; Freeman, David M. E. ^[1]; Al‐Hashimi, Mohammed ^[4]; Chen, Lin X. ^[3]; Marks, Tobin J. ^[5]; Anthopoulos, Thomas D. ^[2]; Bronstein, Hugo ^[1]

Department of Chemistry University College London Christopher Ingold Building London WC1H 0AJ UK
Centre for Plastic Electronics Imperial College London London SW7 2AZ UK
Chemical Sciences and Engineering Division Argonne National Laboratory 9700 South Cass Avenue Lemont IL 60439 USA, Department of Chemistry Materials Research Center and Argonne‐Northwestern Solar Energy Research Center Northwestern University 2145 Sheridan Road Evanston IL 60208 USA
Department of Chemistry Texas A&,M University at Qatar P.O. Box 23874 Doha Qatar
Department of Chemistry Materials Research Center and Argonne‐Northwestern Solar Energy Research Center Northwestern University 2145 Sheridan Road Evanston IL 60208 USA

Publication Date:: Thu Sep 28 00:00:00 EDT 2017

Sponsoring Org.:: USDOE

OSTI Identifier:: 1395407

Grant/Contract Number:: DE‐AC02‐06CH11357

Resource Type:: Publisher's Accepted Manuscript

Journal Name:: Advanced Functional Materials

Additional Journal Information:: Journal Name: Advanced Functional Materials Journal Volume: 27 Journal Issue: 43; Journal ID: ISSN 1616-301X

Publisher:: Wiley Blackwell (John Wiley & Sons)

Country of Publication:: Germany

Language:: English

Citation Formats


                    Fallon, Kealan J., Santala, Annikki, Wijeyasinghe, Nilushi, Manley, Eric F., Goodeal, Niall, Leventis, Anastasia, Freeman, David M. E., Al‐Hashimi, Mohammed, Chen, Lin X., Marks, Tobin J., Anthopoulos, Thomas D., and Bronstein, Hugo. Effect of Alkyl Chain Branching Point on 3D Crystallinity in High N‐Type Mobility Indolonaphthyridine Polymers.  Germany: N. p., 2017. 
Web.  doi:10.1002/adfm.201704069.

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                    Fallon, Kealan J., Santala, Annikki, Wijeyasinghe, Nilushi, Manley, Eric F., Goodeal, Niall, Leventis, Anastasia, Freeman, David M. E., Al‐Hashimi, Mohammed, Chen, Lin X., Marks, Tobin J., Anthopoulos, Thomas D., & Bronstein, Hugo. Effect of Alkyl Chain Branching Point on 3D Crystallinity in High N‐Type Mobility Indolonaphthyridine Polymers.  Germany.  https://doi.org/10.1002/adfm.201704069

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                    Fallon, Kealan J., Santala, Annikki, Wijeyasinghe, Nilushi, Manley, Eric F., Goodeal, Niall, Leventis, Anastasia, Freeman, David M. E., Al‐Hashimi, Mohammed, Chen, Lin X., Marks, Tobin J., Anthopoulos, Thomas D., and Bronstein, Hugo. Thu .  
"Effect of Alkyl Chain Branching Point on 3D Crystallinity in High N‐Type Mobility Indolonaphthyridine Polymers".  Germany.  https://doi.org/10.1002/adfm.201704069.

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@article{osti_1395407,

  title        = {Effect of Alkyl Chain Branching Point on 3D Crystallinity in High N‐Type Mobility Indolonaphthyridine Polymers},

  author       = {Fallon, Kealan J. and Santala, Annikki and Wijeyasinghe, Nilushi and Manley, Eric F. and Goodeal, Niall and Leventis, Anastasia and Freeman, David M. E. and Al‐Hashimi, Mohammed and Chen, Lin X. and Marks, Tobin J. and Anthopoulos, Thomas D. and Bronstein, Hugo},

  abstractNote = {Abstract Herein, this study investigates the impact of branching‐point‐extended alkyl chains on the charge transport properties of three ultrahigh n‐type mobility conjugated polymers. Using grazing incidence wide‐angle X‐ray scattering, analysis of the crystallinity of the series shows that while π–π interactions are increased for all three polymers as expected, the impact of the side‐chain engineering on polymer backbone crystallinity is unique to each polymer and correlates to the observed changes in charge transport. With the three polymers exhibiting n‐type mobilities between 0.63 and 1.04 cm 2 V −1 s −1 , these results ratify that the indolonaphthyridine building block has an unprecedented intrinsic ability to furnish high‐performance n‐type organic semiconductors.},

  doi          = {10.1002/adfm.201704069},

  journal      = {Advanced Functional Materials},

  number       = 43,

  volume       = 27,

  place        = {Germany},

  year         = {Thu Sep 28 00:00:00 EDT 2017},

  month        = {Thu Sep 28 00:00:00 EDT 2017}

}

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Works referenced in this record:

Exploring the origin of high optical absorption in conjugated polymers
journal, May 2016

Vezie, Michelle S.; Few, Sheridan; Meager, Iain
Nature Materials, Vol. 15, Issue 7
DOI: 10.1038/nmat4645

Unconventional Face-On Texture and Exceptional In-Plane Order of a High Mobility n-Type Polymer
journal, July 2010

Rivnay, Jonathan; Toney, Michael F.; Zheng, Yan
Advanced Materials, Vol. 22, Issue 39
DOI: 10.1002/adma.201001202

Thieno[3,2- b ]thiophene−Diketopyrrolopyrrole-Containing Polymers for High-Performance Organic Field-Effect Transistors and Organic Photovoltaic Devices
journal, March 2011

Bronstein, Hugo; Chen, Zhuoying; Ashraf, Raja Shahid
Journal of the American Chemical Society, Vol. 133, Issue 10
DOI: 10.1021/ja110619k

Recent Advances in Bulk Heterojunction Polymer Solar Cells
journal, August 2015

Lu, Luyao; Zheng, Tianyue; Wu, Qinghe
Chemical Reviews, Vol. 115, Issue 23
DOI: 10.1021/acs.chemrev.5b00098

Thiophene-Diketopyrrolopyrrole-Based Quinoidal Small Molecules as Solution-Processable and Air-Stable Organic Semiconductors: Tuning of the Length and Branching Position of the Alkyl Side Chain toward a High-Performance n-Channel Organic Field-Effect Transistor
journal, July 2015

Wang, Chao; Qin, Yunke; Sun, Yuanhui
ACS Applied Materials & Interfaces, Vol. 7, Issue 29
DOI: 10.1021/acsami.5b04082

A high-mobility electron-transporting polymer for printed transistors
journal, January 2009

Yan, He; Chen, Zhihua; Zheng, Yan
Nature, Vol. 457, Issue 7230, p. 679-686
DOI: 10.1038/nature07727

The Role of Regioregularity, Crystallinity, and Chain Orientation on Electron Transport in a High-Mobility n-Type Copolymer
journal, March 2014

Steyrleuthner, Robert; Di Pietro, Riccardo; Collins, Brian A.
Journal of the American Chemical Society, Vol. 136, Issue 11
DOI: 10.1021/ja4118736

Diketopyrrolopyrrole–Diketopyrrolopyrrole-Based Conjugated Copolymer for High-Mobility Organic Field-Effect Transistors
journal, October 2012

Kanimozhi, Catherine; Yaacobi-Gross, Nir; Chou, Kang Wei
Journal of the American Chemical Society, Vol. 134, Issue 40
DOI: 10.1021/ja308211n

Bis(thienothiophenyl) Diketopyrrolopyrrole-Based Conjugated Polymers with Various Branched Alkyl Side Chains and Their Applications in Thin-Film Transistors and Polymer Solar Cells
journal, January 2015

Shin, Jicheol; Park, Gi Eun; Lee, Dae Hee
ACS Applied Materials & Interfaces, Vol. 7, Issue 5
DOI: 10.1021/am508026s

Photocurrent Enhancement from Diketopyrrolopyrrole Polymer Solar Cells through Alkyl-Chain Branching Point Manipulation
journal, July 2013

Meager, Iain; Ashraf, Raja Shahid; Mollinger, Sonya
Journal of the American Chemical Society, Vol. 135, Issue 31
DOI: 10.1021/ja406934j

A Naphthodithiophene-Diketopyrrolopyrrole Donor Molecule for Efficient Solution-Processed Solar Cells
journal, June 2011

Loser, Stephen; Bruns, Carson J.; Miyauchi, Hiroyuki
Journal of the American Chemical Society, Vol. 133, Issue 21
DOI: 10.1021/ja202791n

Side-Chain-Induced Rigid Backbone Organization of Polymer Semiconductors through Semifluoroalkyl Side Chains
journal, January 2016

Kang, Boseok; Kim, Ran; Lee, Seon Baek
Journal of the American Chemical Society, Vol. 138, Issue 11
DOI: 10.1021/jacs.5b10445

Investigation of Structure–Property Relationships in Diketopyrrolopyrrole-Based Polymer Semiconductors via Side-Chain Engineering
journal, February 2015

Back, Jang Yeol; Yu, Hojeong; Song, Inho
Chemistry of Materials, Vol. 27, Issue 5
DOI: 10.1021/cm504545e

Design, Synthesis, and Structure–Property Relationships of Isoindigo-Based Conjugated Polymers
journal, February 2014

Lei, Ting; Wang, Jie-Yu; Pei, Jian
Accounts of Chemical Research, Vol. 47, Issue 4
DOI: 10.1021/ar400254j

Molecular origin of high field-effect mobility in an indacenodithiophene–benzothiadiazole copolymer
journal, July 2013

Zhang, Xinran; Bronstein, Hugo; Kronemeijer, Auke J.
Nature Communications, Vol. 4, Issue 1
DOI: 10.1038/ncomms3238

Indolo-naphthyridine-6,13-dione Thiophene Building Block for Conjugated Polymer Electronics: Molecular Origin of Ultrahigh n-Type Mobility
journal, November 2016

Fallon, Kealan J.; Wijeyasinghe, Nilushi; Manley, Eric F.
Chemistry of Materials, Vol. 28, Issue 22
DOI: 10.1021/acs.chemmater.6b03671

Scherrer grain-size analysis adapted to grazing-incidence scattering with area detectors
journal, October 2009

Smilgies, Detlef-M.
Journal of Applied Crystallography, Vol. 42, Issue 6
DOI: 10.1107/S0021889809040126

A Nature-Inspired Conjugated Polymer for High Performance Transistors and Solar Cells
journal, July 2015

Fallon, Kealan J.; Wijeyasinghe, Nilushi; Yaacobi-Gross, Nir
Macromolecules, Vol. 48, Issue 15
DOI: 10.1021/acs.macromol.5b00542

Chalcogenophene Comonomer Comparison in Small Band Gap Diketopyrrolopyrrole-Based Conjugated Polymers for High-Performing Field-Effect Transistors and Organic Solar Cells
journal, January 2015

Ashraf, Raja Shahid; Meager, Iain; Nikolka, Mark
Journal of the American Chemical Society, Vol. 137, Issue 3
DOI: 10.1021/ja511984q

Polymer solar cells with enhanced fill factors
journal, August 2013

Guo, Xugang; Zhou, Nanjia; Lou, Sylvia J.
Nature Photonics, Vol. 7, Issue 10
DOI: 10.1038/nphoton.2013.207

Long and winding polymeric roads
journal, October 2013

Podzorov, Vitaly
Nature Materials, Vol. 12, Issue 11
DOI: 10.1038/nmat3790

Five-Ring Fused Tetracyanothienoquinoids as High-Performance and Solution-Processable n-Channel Organic Semiconductors: Effect of the Branching Position of Alkyl Chains
journal, September 2014

Li, Jie; Qiao, Xiaolan; Xiong, Yu
Chemistry of Materials, Vol. 26, Issue 19
DOI: 10.1021/cm502952u

High-Molecular-Weight Regular Alternating Diketopyrrolopyrrole-based Terpolymers for Efficient Organic Solar Cells
journal, June 2013

Hendriks, Koen H.; Heintges, Gaël H. L.; Gevaerts, Veronique S.
Angewandte Chemie International Edition, Vol. 52, Issue 32
DOI: 10.1002/anie.201302319

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Title: Effect of Alkyl Chain Branching Point on 3D Crystallinity in High N‐Type Mobility Indolonaphthyridine Polymers

Abstract

Citation Formats

Exploring the origin of high optical absorption in conjugated polymers journal, May 2016

Unconventional Face-On Texture and Exceptional In-Plane Order of a High Mobility n-Type Polymer journal, July 2010

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Unconventional Face-On Texture and Exceptional In-Plane Order of a High Mobility n-Type Polymer
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